/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: LENOVO
 * Date: 2024-08-05
 * Time: 12:19
 */
public interface IList {
    void addAtPos(int pos,int value);
    void show();
    boolean contains(int toFind);
    int indexOf(int toFind);//不包含返回-1

}
